With the following method to solve:
A, FN switch on.
1, find the keyboard above F1-F12 above the labeled speaker icon, and there is a + or volume up key.
For example, F5 in the picture below is.
2, press FN does not move, press once F5 is OK. this is the switch type, once on, once off.
Second, if the above method can not be solved is to prohibit the wireless wireless network.
1, open the control panel.
2, open the device manager.
3, open the network card, choose to enable it.